---
publication_id: "OT-2026-000000442"
title: "Cable length measurement device"
published_at: "2026-09-15T19:02:53.348114Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000442"
categories:
  - "sensors-controls-machine-vision/position-and-presence-sensing"
keywords:
  - "g01b7/026"
  - "b65h75/40"
  - "b65h75/44"
  - "g01b7/042"
---

# Cable length measurement device

## Abstract

A cable length measurement device, configured to: be connected a winding wheel and measure an extension or retraction length of a cable on the winding wheel, which includes a fixed shell, a rotating shell and a control panel. The rotating shell is rotatably connected to the fixed shell. The rotating shell is configured to be connected to the winding wheel and rotate around a rotation axis with the winding wheel. One of the fixed shell and the rotating shell is provided with a signal transmitter. The other one of the fixed shell and the rotating shell is connected to the control panel. The control panel is provided with a signal receiver. When the signal transmitter passes through the signal receiver, the signal receiver generates a counting signal, and the control panel receives the counting signal to calculate the extension or retraction length of the cable on the winding wheel.